Appendix B. Uploading files from a serial console

There are many scenarios where the machine is dead in the
water and you need to upload a file to correct that. In many of
these scenarios the only way to upload the file is via the serial
port being used as the console.

Moving files about over serial links has a long history in
microcomputing and this section goes back in time to uncover the
tools commonly used in the pre-Internet age of the Bulletin Board
System.